As our forum user biggzy let on the other day Nokia are rumoured to be soon to release a new version of the N96 firmware - and as DailyMobile.se report, a copy of v12.035 can be downloaded

http://rapidshare.com/files/160982536/Nokia_firmware_RM-247_EMEA_12.035_v04.00EFAJQROM.exe

BUT, as this is not a supported or authorised copy, the recomendation has to be to wait until Nokia release it via NSU.

But for the brave, or foolhardy, you have the link!